27801379 has 2 divisors, whose sum is σ = 27801380. Its totient is φ = 27801378.

The previous prime is 27801373. The next prime is 27801407. The reversal of 27801379 is 97310872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27801379 - 2¹⁹ = 27277091 is a prime.

It is a Chen prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (27801373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13900689 + 13900690.

It is an arithmetic number, because the mean of its divisors is an integer number (13900690).

Almost surely, 2^27801379 is an apocalyptic number.

27801379 is a deficient number, since it is larger than the sum of its proper divisors (1).

27801379 is an equidigital number, since it uses as much as digits as its factorization.

27801379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 27801379 is about 5272.7013000928. The cubic root of 27801379 is about 302.9391803919.

The spelling of 27801379 in words is "twenty-seven million, eight hundred one thousand, three hundred seventy-nine".